Cr20Ni80电热合金电渣重熔热电场模拟  

Thermoelectricity Field Simulation in the Electroslag Remelting of Cr20Ni80 Electrothermal Alloy

作　　者：张浩[1] 周晓龙[1] 樊勇军 周允红 陶麒鹦 

机构地区：[1]昆明理工大学材料科学与工程学院,云南昆明650093 [2]西安飞机工业铝业股份有限公司,陕西西安710089

出　　处：《铸造》2015年第5期419-424,共6页Foundry

基　　金：金川预研基金(金川201102)

摘　　要：采用有限元软件ANSYS模拟了Cr20Ni80电热合金电渣重熔系统处于稳态时的热电场分布,并且研究分析了重熔系统中渣池部分和金属熔池与铸锭部分的温度、热流密度、电位以及电流密度的分布。模拟结果表明:重熔系统稳态时高温区主要集中在渣池部分;在自耗电极端部、结晶器以及渣金界面处热流密度大;系统电位基本为层状分布,自耗电极端部电位最高,电流密度也最大;从自耗电极向下,电位、电流逐渐降低,铸锭电位基本为零。试验结果表明:根据有限元模拟结果来改进生产工艺,可以改善铸锭的微观组织。The thermoelectricity field distribution of Cr20Ni80 electrothermal alloy was simulated by the software ANSYS when it was under steady state in the electroslag remelting system. And the distribution of temperature, heat flux, potential and current density of slag bath and metallic molten bath was studied in the system. The simulation results show that the high temperature zone mainly concentrated in the slag bath under steady state. At the bottom of the consumable electrode, the mold and the slag-metal interface exhibit a high heat flux density. The potential distribution of this system is layered, the consumable electrode end with the highest potential and current density. From the consumable electrode to ingot, potential and current is gradually decreased, and the potential of ingot is almost zero. The experimental results indicate that improving production orocess by the study of finite element simulation, the microstructure of ingot can be imnroved.

关 键 词：CR20NI80 电渣重熔 数值模拟 温度分布 电位分布 

分 类 号：TF141[冶金工程—冶金物理化学]